PMID 25283155
When you're cutting calories to lose fat, your body often sacrifices muscle along with fat
Chronic diseases including diabetes, HIV, and hepatic cirrhosis impair antioxidant capacity

Owners commonly notice one or more of the following: Limping or lameness: favoring a limb, "toe-touching," or intermittent limping that comes and goes Stiffness after rest: difficulty rising after sleeping, or a slow, stiff first few minutes that loosens with movement Reluctance to jump, climb, or use stairs: hesitating at the car, couch, or staircase they used to handle easily Reduced activity or stamina: shorter walks, less play, or lagging behind on familiar routes Audible joint changes: clicking or popping from a joint, particularly the stifle (knee) Muscle loss: visible thinning of the muscle on one hind limb compared with the other, a sign of chronic underuse Behavioral changes: licking a joint, irritability when a limb is handled, or a drop in overall mood tied to discomfort A sudden non-weight-bearing lameness the dog will not put any weight on a leg warrants prompt veterinary attention rather than watchful waiting, as it can indicate an acute cruciate rupture or fracture

Drink plenty of filtered water throughout the day to help flush toxins from the body
Some people respond strongly to low doses and never need to go above 7.5 mg